mongodb/mongoid · error · Mongoid::Errors::NoEnvironment

Could not load the configuration since no environment was de

Error message

Could not load the configuration since no environment was defined.

What it means

Error "Could not load the configuration since no environment was defined." thrown in mongodb/mongoid.

Source

Thrown at lib/mongoid/config/environment.rb:29

      # Uses the following sources in order:
      # - If +::Rails+ is defined, +Rails.env+.
      # - If +::Sinatra+ is defined, +Sinatra::Base.environment+.
      # - +RACK_ENV+
      # - +MONGOID_ENV*
      #
      # @example Get the env name.
      #   Environment.env_name
      #
      # @raise [ Errors::NoEnvironment ] If environment name cannot be
      #   determined because none of the sources was set.
      #
      # @return [ String ] The name of the current environment.
      # @api public
      def env_name
        return ::Rails.env if defined?(::Rails)
        return ::Sinatra::Base.environment.to_s if defined?(::Sinatra)

        ENV['RACK_ENV'] || ENV['MONGOID_ENV'] or raise Errors::NoEnvironment
      end

      # Load the yaml from the provided path and return the settings for the
      # specified environment, or for the current Mongoid environment.
      #
      # @example Load the yaml.
      #   Environment.load_yaml("/work/mongoid.yml")
      #
      # @param [ String ] path The location of the file.
      # @param [ String | Symbol ] environment Optional environment name to
      #   override the current Mongoid environment.
      #
      # @return [ Hash ] The settings.
      #
      # @api private
      def load_yaml(path, environment = nil)
        env = environment ? environment.to_s : env_name

View on GitHub (pinned to 0da0e23d71)

When it happens

Trigger: Thrown at lib/mongoid/config/environment.rb:29 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of mongodb/mongoid@0da0e23d71 (2026-08-23). Data as JSON: /api/errors/341217077fa69731. Report an issue: GitHub.